Daikin R71FUV1 Service Manual page 369

Si20-701_B
Troubleshooting
Caution
Check
LED indication
on outdoor unit PCB.
(Is voltage too
low?)
Is
supply
voltage 220-240V
(RZ(Y)71LV1), 220V
(RZY71 LVAL,
RZY100/125
LTAL)?
Does K1M turn ON?
With compressor in
operation, measure
voltage between P and N
(∗2) of power module or
between + and – of
electrolytic capacitor.
Is measured
voltage 220 VDC
or higher?
Note:
∗1. K1M replacement possible in RZY100/125L.
∗2. For RZY71: Between terminals P1 and N1
For RZY100~125L: Between terminals P2 and N1
362
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
NO
YES
coil applied
with 220-240V
(RZ(Y)71LV1), 220V
(RZY71 LVAL,
RZY100/125
YES
NO
Troubleshooting by Remote Controller
Is K1M
LTAL)?
NO
External factor
Local power
supply condition
YES
Replace the K1M
(∗1).
Replace the
outdoor unit
PCB.
Monitor voltage
(instantaneous
voltage drop).
Replace the
outdoor unit
PCB.